MPVView: Update surfaceChanged() handling again
MPVView: Update surfaceChanged() handling again

mpv-player/mpv#5343 enables simplification of this

mpv-android/mpv-android,mpv-android/mpv-android,jeeb/mpv-android,mpv-android/mpv-android,mpv-android/mpv-android,jeeb/mpv-android,jeeb/mpv-android,mpv-android/mpv-android,jeeb/mpv-android,jeeb/mpv-android